A displacement system and compression vertebrae comprising: a fixing rod comprising a rod body having a predetermined length, and at least two sets of spinal screw, each screw assembly comprising a screw (102) pedicle that It has a head (105), a portion (103) of the threaded shaft, and a surface 5 (107) coupling the head portion to drive the screw into the vertebra a member (108) for receiving the body portion (105) of screw head (102), the member (108) body including: a base from which protrudes the screw shaft portion a portion (106) of tower and a pair of slots (130) opposite on the same adapted to receive a portion of a rod (202) fixing therebetween, and disposed between the base and the portion (106) of tower there is a section (110) Break It is allowing portion (106) of tower to be removed from the base wherein the clamp rod is adapted for attachment between at least two sets of spinal screw and comprises at least one portion (402, 404) coupling at least one end thereof, wherein said at least one coupling portion is selected from the group consisting of: depression, an opening, a flap, a ledge, a clip, snap ring, a washer and an enlarged end, and wherein said at least one coupling portion is adapted to be received by or to receive a portion corresponding coupling of a (600) compression tool to move the rod (202) fixing respect to one of the at least two sets of spinal screws when the screws spinal assembly is fixed to the vertebrae.Un sistema de desplazamiento y compresión de vértebras que comprende: una varilla de fijación que comprende un cuerpo de varilla que tiene una longitud predeterminada, y al menos dos conjuntos de tornillo espinales, cada conjunto de tornillo que comprende: un tornillo (102) pedicular que tiene una cabeza (105), una porción (103) de eje roscado, y una superficie 5 (107) de acoplamiento en la porción de cabeza para conducir el tornillo en las vértebras un miembro (108) de cuerpo para recibir la porción (105) de cabeza del tornillo (10
